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Posted to issues@hbase.apache.org by "Jonathan Gray (JIRA)" <ji...@apache.org> on 2010/11/29 22:05:11 UTC
[jira] Resolved: (HBASE-3282) Need to retain DeadServers to ensure
we don't allow previously expired RS instances to rejoin cluster
[ https://issues.apache.org/jira/browse/HBASE-3282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Gray resolved HBASE-3282.
----------------------------------
Resolution: Fixed
Hadoop Flags: [Reviewed]
Committed to branch and trunk after verifying unit tests pass. Thanks for review stack.
> Need to retain DeadServers to ensure we don't allow previously expired RS instances to rejoin cluster
> -----------------------------------------------------------------------------------------------------
>
> Key: HBASE-3282
> URL: https://issues.apache.org/jira/browse/HBASE-3282
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Jonathan Gray
> Assignee: Jonathan Gray
> Fix For: 0.90.0, 0.92.0
>
> Attachments: HBASE-3282-v4.patch
>
>
> Currently we clear a server from the deadserver set once we finish processing it's shutdown. However, certain circumstances (network partitions, race conditions) could lead to the RS not doing a check-in until after the shutdown has been processed. As-is, this RS will now be let back in to the cluster rather than rejected with YouAreDeadException.
> We should hang on to the dead servers so we always reject them.
> One concern is that the set will grow indefinitely. One recommendation by stack is to use SoftReferences.
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